Electrical connection device

Abstract

An electrical connection device is used to be provided in an electronic device casing, and comprises a first circuit board and a second circuit board which are substantially coplanar, a receptacle connector provided to the first circuit board and a plug connector provided to the second circuit board. The receptacle connector comprises a housing and a plurality of first terminals. The housing has a first mating surface, and a pair of sliding contact grooves respectively adjacent to both sides of the first mating surface. The plug connector comprises a body and a plurality of second terminals. The body has a pair of side flanges respectively engaged with and received in the sliding contact grooves. The plug connector is mated with the receptacle connector in a direction perpendicular to a board surface of the first circuit board.

What is claimed is: 
     
       1. An electrical connection device used to be provided in an electronic device casing, the electrical connection device comprising:
 a first circuit board having a first side edge; 
 a second circuit board substantially coplanar with the first circuit board and having a second side edge opposite to the first side edge; 
 a receptacle connector provided to the first circuit board and closely adjacent to the first side edge, comprising
 an housing having a first mounting surface abutting against a board surface of the first circuit board, a first mating surface, and a pair of sliding contact grooves respectively adjacent to both sides of the first mating surface, and the first mating surface and the sliding contact grooves being substantially perpendicular to a plane where the first mounting surface is present; and 
 a plurality of first terminals each having a first fixed portion fixedly provided to the housing, a first contact portion exposed from the first mating surface, and a first tail portion exposed from the first mounting surface and electrically connected to the first circuit board; and 
 
 a plug connector provided to the second circuit board and partially protruding from the second side edge, comprising
 an body, having a second mounting surface abutting against a board surface of the second circuit board, a second mating surface substantially perpendicular to a plane where the second mounting surface is present and corresponding to the first mating surface, and a pair of side flanges respectively adjacent to both sides of the second mating surface and respectively engaged with and received in the sliding contact grooves; and 
 a plurality of second terminals each having a second fixed portion fixedly provided to the body, a second contact portion exposed from the second mating surface, and a second tail portion exposed from the second mounting surface and electrically connected to the second circuit board, the second contact portions of the second terminals respectively contacting the first contact portions of the first terminals so as to form an electrical connection. 
 
 
     
     
       2. The electrical connection device according to  claim 1 , wherein one of the first circuit board and the second circuit board is provided with a plurality of I/O connectors with insert ports thereof exposed from a side surface of the electronic device casing. 
     
     
       3. The electrical connection device according to  claim 2 , wherein the other one of the first circuit board and the second circuit board is provided with a central processor. 
     
     
       4. The electrical connection device according to  claim 1 , wherein the second terminals each further have an extension portion connected to the second fixed portion and the second contact portion, the extension portion extends substantially parallel to the plane where the second mounting surface is present and has a plurality of protrusions respectively protruding from both sides close to the second contact portion, the second fixed portion and the second contact portion are substantially perpendicular to the extension portion. 
     
     
       5. The electrical connection device according to  claim 1 , wherein the first contact portions of the first terminals have resilience, the second contact portions of the second terminals are in form of flat plate shape. 
     
     
       6. The electrical connection device according to  claim 1 , wherein the side flanges each have a bottom surface coplanar with the second mounting surface. 
     
     
       7. The electrical connection device according to  claim 6 , wherein the first circuit board further has a notch recessing inwardly from the first side edge; the housing further has a bottom projection positioned at bottom sides of the first mating surface and the sliding contact grooves, the bottom projection is received in the notch and together defines a receiving groove; the body further has a bottom flange connected to bottom sides of the second mating surface and the side flanges and protruding from the bottom surfaces of the side flanges, and the bottom flange is engaged with and received in the receiving groove.